Pin file-fastener



Sept; 2, 1952 s. SEGAL PIN FILE-FASTENER Original Filed Sept. 18, 1944.1 Samuel 5 BY g 64, 2 Arr-021m Patented Sept. 2, i952 Samuel Segal, NewYork, N31 5,, v

son-Jones Company, Chicago, 5111,, amonpora tion of MassachusettsOriginal application September 1 8, 1944, 7Serial No. 554,568, nowPatent Nofisnsasoigastea February 28, 1950." Divided and thisapplication February 11, 1949, Serial No. 75,790

This invention relates to a fastener 01 the type ordinarily used tosecure a plurality of sheets of paper or similar material togethertemporarily, and this application is a division of my prior applicationSerial No. 554,568, filed September 18, 1944, which issued as Patent No.2,498,901 on February 28, 1950, 1

It is an object of this invention to provide improved means forfacilitating the securement of a compressor plate to the prongs of abase memher. It is a further object of this invention to provide acompressor plate with means for speeding up filing operations bydecreasing the time required for manipulating the fastener. Otherobjects of this 'invention will become apparent upon reading thefollowing description, taken in conjunctiomwith the accompanyingdrawing, in which: I

Figure 1 is a perspective view of one embodiment of my improved fastenersecured to a stack of sheets; 1

Figure 2 is a cross sectional view, taken alon the line IIII of Figurel; and

Figure 3 is a detail perspective view of another embodiment of mycompressor plate.

In the drawing, the reference numeral 2 indicates a base member having apair of sheet retaining prongs 3 extending from opposite ends. Theprongs may be integral with the base member, or they may be secured tothe base member in any suitable fashion. A plurality of sheets 4 ofpaper or similar material, provided with a pair of apertures 5,;isimpaled on the prongs 3. A compressor plate'ii, adapted to engage theprongs 3, is positione'd'on top of the sheets 4 between the prongs 3.

The compressor plate 8 comprises a channel member I having-upstandingwalls 8 and Stand longitudinally erg-tending flanges Ill and H. Thechannel member rests on the stack of sheets 4 and the flanges i and Hare spaced from the surface of the sheets a distance sufllcient topermit free slidingmovement of a pair of keepers 2. The flanges l0 andII are upset adjacent the outer ends of the compressor plate, asindicated at l3 and M, to restrict the sliding movement of the keepersl2. The flange III is provided with extensions projecting beyond theends of channel member I. The extensions l5 facilitate assembly of thecompressor plate with the sheet retaining prongs by horizontallyaligning the compressor plate with the prongs. When the prongs 3 arestanding upright it is necessary only to push the compressor platetransversely of the prongs until the extensions l5 engage the edges ofthe prongs, The prongs arethen bent down- 1 Claim". (01 24-153) wardlyinto the channel member and the sliding keepers l2" are moved over themto securely retain the papers in the stack 4 in bound relationship.

In the embodiment of the invention illustrated in Figure 3, thecompressor plate |'6 comprises a channel member I! having upstandingside walls l8 and I9, and longitudinally extending flanges 20 and 2|. Apair of sliding keepers 22 and 23 is mounted onthe flanges 2|] and 2|.Flange 2| has lips 24;.and 25 turned up at its opposite ends to limitthe sliding movement of the keepers.

The ends of keepers 22 and 23 sliding on flanges 20 and 2| are providedwith extensions 26 and 21 which project beyond the opposite ends of thecompressor plate I6 when they are in their outermost position. -When thecompressor plate I6 is to be assembled with a base member whose prongs 3extend through a stack of sheets 4, extensions 26 and 21 are held intheir outermost position and the compressor plate is moved between theprongs 3 in a plane parallel to the uppermost sheet 4. Movement in thisdirection causes extensions 25 and 26 to engage the edges of prongs 3and thereby align the channel'member II with the prongs so that theywill be positioned in the channel when they are bent downwardly towardeach other.

As each prong 3 is bent downwardly into channel H the keeper 22 or 23,adjacent that. prong, is slid out of the way and then is slid over theprong after it has been bent, to hold the-prong against accidentaldisplacement from the channel. When sheets are to be removed from thestack, keepers 22 and 23 are each moved inwardly separately to clear theadjacent prong and the prong is then bent upwardly so that the sheetscan be removed in conventional manner;

From the foregoing description it will be apparent that I have devised acompressor plate that may be brought into accurate alignment with a basemember in minimum time and that the necessity of impaling apertured endsof a compressor plate on the prongs of a base'member has been eliminatedfor both the assembly and disassembly of the fastener unit.

Although I have described two preferred embodiments of my invention indetail, it will be understood that the description thereof isillustrative,,rather than restrictive, as many details may be modifiedor changed without departing from the spirit or scope of my invention.Accordingly, I do not desire to be restricted to the exact details ofconstruction described, except as limited by the appended claim.

3 I claim: REFERENCES CITED In faster), a base menfber havmg Pair of Thefollowing references are of record in the sheet retaimng prongsprogeetmg therefrom, a me of this patent; compressor plate comprising achannel member having longitudinally,extending.flanges' along 5 2;

each sideof'said channel memberyone of said Number Name- --=Date flangesbeing of less length than the length of 849,774 Dow A r. 9, 1907 saidbase member between said prongs to permit 1 1,094,951 Washburne Apr. 28,1914 insertion of said compressor plate between said 1,936,145: WagnerNov. 21, 1933 prongs by lateral movement, projections laterally 101,997,635 Forth Apr. 16, 1935 aligned with said other flange andextending outi 1 I wardly to engage said prongs when said com pressorplate is moved laterally against said prongs. I v

sAMUEL SEGAL. 15

